Which to use
“sien” is an adjective and “sinon” is a conjunction - they look or sound alike but fill different roles in a sentence.
- #7,116
- “sien” frequency rank
- #640
- “sinon” frequency rank
- 7756
- confusion score
Side-by-Side Comparison
| Feature | sien | sinon |
|---|---|---|
| Definition | Qui appartient à lui ou à elle. | Si ce n’est : si ce qui est énoncé est faux, alors. |
Where the eye mixes sien and sinon
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: sien vs sinon
These two trip readers on the page rather than in the ear: sien is \sjɛ̃\ while sinon is \si.nɔ̃\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 7756, derived from the frequency rank of both members and their visual similarity.
sien is recorded at frequency rank #7,116, classified as anadj, pronounced \sjɛ̃\. sinon is at rank #640, tagged as aconj, pronounced \si.nɔ̃\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 7756, this pair ranks #422,218 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sien vs sinon
Shared letters: ins. Private to "sien": e. Private to "sinon": o.
"sien" · 4 letters · shape CVVC · "sinon" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "sien" and "sinon" be used interchangeably?
Which is more common, "sien" or "sinon"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sien" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sinon" - compare definitions side by side with the headword page. Word entry
- This pair ranks #422,218 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sien" and "sinon" also get mixed up with nearby pairs, the highest-scored neighbour is "sien vs sires". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #422,218 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.